Grade | Density (g/cm3) | Hardness (HRA) | TRS (MPa) |
YG8 | 14.80 | 89.5 | 2200 |
YG8C | 14.80 | 88.5 | 2400 |
YG11C | 14.40 | 87.00 | 2850 |
YK05 | 14.95 | 90.5 | 2500 |
YK15 | 14.60 | 87.6 | 2700 |
YK20 | 14.52 | 87.3 | 2650 |
YK25 | 14.40 | 87.2 | 2550 |
Grade | Applications recommended |
YG8 | For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. |
YG8C | Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations. |
YG11C | Suitable for embedding rotary percussive drill bits of heavy rock drilling machines for drilling hard formations of class f=18 or above |
YK05 | Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations. |
YK15 | Suitable for embedding rotary percussive drill bits of light rock drilling machines for drilling medium rock formations of class f=14-15 |
YK20 | Suitable for embedding rotary percussive drill bits of medium rock drilling machine for drilling hard rock formations of class f=18 or above. |
YK25 | Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations |
Type | Dimension | ||||
L | H | a | ß | SR | |
GZ0812 | 8.25 | 12 | 20 | 26.5 | 4.4 |
GZ0813 | 8.25 | 13 | 20 | 26.5 | 4.4 |
GZ0913 | 9.25 | 13 | 20 | 26.5 | 5 |
GZ0914 | 9.25 | 14 | 20 | 26.5 | 5 |
GZ1014 | 10.25 | 14 | 20 | 26.5 | 5.5 |
GZ1015 | 10.25 | 15 | 20 | 26.5 | 5.5 |
GZ1114 | 11.3 | 14 | 20 | 26.5 | 6 |
GZ1116 | 11.3 | 16 | 20 | 26.5 | 6 |
GZ1217 | 12.35 | 17 | 20 | 26.5 | 6.6 |
GZ1218 | 12.35 | 18 | 20 | 26.5 | 6.6 |
GZ1319 | 13.35 | 19 | 20 | 26.5 | 7 |
GZ1320 | 13.35 | 20 | 20 | 26.5 | 7 |
GZ1420 | 14.35 | 20 | 20 | 14.5 | 7.7 |
GZ1421 | 14.35 | 21 | 20 | 14.5 | 7.7 |
GZ1623 | 16.35 | 23 | 20 | 14.5 | 8.8 |
GZ1624 | 16.35 | 24 | 20 | 14.5 | 8.8 |
GZ1826 | 18.35 | 26 | 20 | 14.5 | 9.9 |
GZ2028 | 20.35 | 28 | 20 | 14.5 | 11 |
GZ2232 | 22.35 | 32 | 20 | 14.5 | 12 |
GZ2640 | 26.35 | 40 | 20 | 14.5 | 14 |
Type | Dimension | ||||
D | H | a | SR | e | |
GZ0812-A | 8.25 | 12 | 30 | 4.4 | 0.7 |
GZ0813-A | 8.25 | 13 | 30 | 4.4 | 0.7 |
GZ0913-A | 9.25 | 13 | 30 | 5.0 | 0.7 |
GZ0914-A | 9.25 | 14 | 30 | 5.0 | 0.7 |
GZ1014-A | 10.25 | 14 | 30 | 5.5 | 0.7 |
GZ1015-A | 10.25 | 15 | 30 | 5.5 | 0.7 |
GZ1114-A | 11.3 | 14 | 30 | 6 | 0.7 |
GZ1116-A | 11.3 | 16 | 30 | 6 | 0.7 |
GZ1217-A | 12.35 | 17 | 30 | 6.6 | 0.7 |
GZ1218-A | 12.35 | 18 | 30 | 6.6 | 0.7 |
GZ1319-A | 13.35 | 19 | 30 | 7 | 0.7 |
GZ1320-A | 13.35 | 20 | 30 | 7 | 0.7 |
GZ1420-A | 14.35 | 20 | 30 | 7.7 | 0.7 |
GZ1421-A | 14.35 | 21 | 30 | 7.7 | 0.7 |
GZ1623-A | 16.35 | 23 | 30 | 8.8 | 0.7 |
GZ1624-A | 16.35 | 24 | 30 | 8.8 | 0.7 |
GZ1826-A | 18.35 | 26 | 30 | 9.9 | 0.7 |
GZ2028-A | 20.35 | 28 | 30 | 11 | 0.7 |
GZ2232-A | 22.35 | 32 | 30 | 12 | 0.7 |
GZ2640-A | 26.35 | 40 | 30 | 14 | 0.7 |
Type | Dimension | |||||||
D | H | h | α° | ß° | ɣ° | Ɵ° | e | |
GZ1217 | 12.25 | 17 | 11 | 18 | 70 | 40 | 20 | 1 |
GZ1419 | 14.25 | 19 | 12 | 18 | 75 | 40 | 20 | 1 |
GZ1520 | 15.25 | 20 | 12.5 | 18 | 75 | 40 | 20 | 1 |
GZ1621 | 16.25 | 21 | 14 | 18 | 70 | 40 | 20 | 1 |
GZ1924 | 19.25 | 24 | 15 | 18 | 70 | 40 | 20 | 1 |
GZ2230 | 22.25 | 30 | 17 | 18 | 70 | 40 | 20 | 1 |